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      1 /*-
      2  * Copyright (c) 1998 Brian Somers <brian (at) Awfulhak.org>
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     24  * SUCH DAMAGE.
     25  *
     26  * $FreeBSD: src/usr.sbin/ppp/bundle.h,v 1.52.26.1 2010/12/21 17:10:29 kensmith Exp $
     27  */
     28 
     29 #define	PHASE_DEAD		0	/* Link is dead */
     30 #define	PHASE_ESTABLISH		1	/* Establishing link */
     31 #define	PHASE_AUTHENTICATE	2	/* Being authenticated */
     32 #define	PHASE_NETWORK		3	/* We're alive ! */
     33 #define	PHASE_TERMINATE		4	/* Terminating link */
     34 
     35 /* cfg.opt bit settings */
     36 #define OPT_FILTERDECAP		1
     37 #define OPT_FORCE_SCRIPTS	2 /* force chat scripts */
     38 #define OPT_IDCHECK		3
     39 #define OPT_IFACEALIAS		4
     40 #ifndef NOINET6
     41 #define OPT_IPCP		5
     42 #define OPT_IPV6CP		6
     43 #endif
     44 #define OPT_KEEPSESSION		7
     45 #define OPT_LOOPBACK		8
     46 #define OPT_NAS_IP_ADDRESS	9
     47 #define OPT_NAS_IDENTIFIER	10
     48 #define OPT_PASSWDAUTH		11
     49 #define OPT_PROXY		12
     50 #define OPT_PROXYALL		13
     51 #define OPT_SROUTES		14
     52 #define OPT_TCPMSSFIXUP		15
     53 #define OPT_THROUGHPUT		16
     54 #define OPT_UTMP		17
     55 #define OPT_MAX			17
     56 
     57 #define MAX_ENDDISC_CLASS 5
     58 
     59 #define Enabled(b, o)		((b)->cfg.optmask & (1ull << (o)))
     60 #define opt_enable(b, o)	((b)->cfg.optmask |= (1ull << (o)))
     61 #define opt_disable(b, o)	((b)->cfg.optmask &= ~(1ull << (o)))
     62 
     63 /* AutoAdjust() values */
     64 #define AUTO_UP		1
     65 #define AUTO_DOWN	2
     66 
     67 struct sockaddr_un;
     68 struct datalink;
     69 struct physical;
     70 struct link;
     71 struct server;
     72 struct prompt;
     73 struct iface;
     74 
     75 struct bundle {
     76   struct fdescriptor desc;    /* really all our datalinks */
     77   int unit;                   /* The device/interface unit number */
     78 
     79   struct {
     80     char Name[20];            /* The /dev/XXXX name */
     81     int fd;                   /* The /dev/XXXX descriptor */
     82     unsigned header : 1;      /* Family header sent & received ? */
     83   } dev;
     84 
     85   u_long bandwidth;           /* struct tuninfo speed */
     86   struct iface *iface;        /* Interface information */
     87 
     88   int routing_seq;            /* The current routing sequence number */
     89   u_int phase;                /* Curent phase */
     90 
     91   struct {
     92     int all;                  /* Union of all physical::type's */
     93     int open;                 /* Union of all open physical::type's */
     94   } phys_type;
     95 
     96   unsigned CleaningUp : 1;    /* Going to exit.... */
     97   unsigned NatEnabled : 1;    /* Are we using libalias ? */
     98 
     99   struct fsm_parent fsm;      /* Our callback functions */
    100   struct datalink *links;     /* Our data links */
    101 
    102   time_t upat;                /* When the link came up */
    103 
    104   struct {
    105     struct {
    106       unsigned timeout;          /* NCP Idle timeout value */
    107       unsigned min_timeout;      /* Don't idle out before this */
    108     } idle;
    109     struct {
    110       char name[AUTHLEN];        /* PAP/CHAP system name */
    111       char key[AUTHLEN];         /* PAP/CHAP key */
    112     } auth;
    113     unsigned long long optmask;  /* Uses OPT_ bits from above */
    114     char label[50];              /* last thing `load'ed */
    115     u_short ifqueue;             /* Interface queue size */
    116 
    117     struct {
    118       unsigned timeout;          /* How long to leave the output queue choked */
    119     } choked;
    120   } cfg;
    121 
    122   struct ncp ncp;
    123 
    124   struct {
    125     struct filter in;         /* incoming packet filter */
    126     struct filter out;        /* outgoing packet filter */
    127     struct filter dial;       /* dial-out packet filter */
    128     struct filter alive;      /* keep-alive packet filter */
    129   } filter;
    130 
    131   struct {
    132     struct pppTimer timer;    /* timeout after cfg.idle_timeout */
    133     time_t done;
    134   } idle;
    135 
    136 #ifndef NORADIUS
    137   struct {
    138     struct pppTimer timer;
    139     time_t done;
    140   } session;
    141 #endif
    142 
    143   struct {
    144     int fd;                   /* write status here */
    145   } notify;
    146 
    147   struct {
    148     struct pppTimer timer;    /* choked output queue timer */
    149   } choked;
    150 
    151 #ifndef NORADIUS
    152   struct radius radius;       /* Info retrieved from radius server */
    153   struct radacct radacct;
    154 #ifndef NOINET6
    155   struct radacct radacct6;
    156 #endif
    157 #endif
    158 };
    159 
    160 #define descriptor2bundle(d) \
    161   ((d)->type == BUNDLE_DESCRIPTOR ? (struct bundle *)(d) : NULL)
    162 
    163 extern struct bundle *bundle_Create(const char *, int, int);
    164 extern void bundle_Destroy(struct bundle *);
    165 extern const char *bundle_PhaseName(struct bundle *);
    166 #define bundle_Phase(b) ((b)->phase)
    167 extern void bundle_NewPhase(struct bundle *, u_int);
    168 extern void bundle_LinksRemoved(struct bundle *);
    169 extern void bundle_Close(struct bundle *, const char *, int);
    170 extern void bundle_Down(struct bundle *, int);
    171 extern void bundle_Open(struct bundle *, const char *, int, int);
    172 extern void bundle_LinkClosed(struct bundle *, struct datalink *);
    173 
    174 extern int bundle_ShowLinks(struct cmdargs const *);
    175 extern int bundle_ShowStatus(struct cmdargs const *);
    176 extern void bundle_StartIdleTimer(struct bundle *, unsigned secs);
    177 extern void bundle_SetIdleTimer(struct bundle *, unsigned, unsigned);
    178 extern void bundle_StopIdleTimer(struct bundle *);
    179 extern int bundle_IsDead(struct bundle *);
    180 extern struct datalink *bundle2datalink(struct bundle *, const char *);
    181 
    182 #ifndef NORADIUS
    183 extern void bundle_StartSessionTimer(struct bundle *, unsigned secs);
    184 extern void bundle_StopSessionTimer(struct bundle *);
    185 #endif
    186 
    187 extern void bundle_RegisterDescriptor(struct bundle *, struct fdescriptor *);
    188 extern void bundle_UnRegisterDescriptor(struct bundle *, struct fdescriptor *);
    189 
    190 extern void bundle_SetTtyCommandMode(struct bundle *, struct datalink *);
    191 
    192 extern int bundle_DatalinkClone(struct bundle *, struct datalink *,
    193                                 const char *);
    194 extern void bundle_DatalinkRemove(struct bundle *, struct datalink *);
    195 extern void bundle_CleanDatalinks(struct bundle *);
    196 extern void bundle_SetLabel(struct bundle *, const char *);
    197 extern const char *bundle_GetLabel(struct bundle *);
    198 extern void bundle_SendDatalink(struct datalink *, int, struct sockaddr_un *);
    199 extern int bundle_LinkSize(void);
    200 extern void bundle_ReceiveDatalink(struct bundle *, int);
    201 extern int bundle_SetMode(struct bundle *, struct datalink *, int);
    202 extern int bundle_RenameDatalink(struct bundle *, struct datalink *,
    203                                  const char *);
    204 extern void bundle_setsid(struct bundle *, int);
    205 extern void bundle_LockTun(struct bundle *);
    206 extern unsigned bundle_HighestState(struct bundle *);
    207 extern int bundle_Exception(struct bundle *, int);
    208 extern void bundle_AdjustFilters(struct bundle *, struct ncpaddr *,
    209                                  struct ncpaddr *);
    210 extern void bundle_AdjustDNS(struct bundle *);
    211 extern void bundle_CalculateBandwidth(struct bundle *);
    212 extern void bundle_AutoAdjust(struct bundle *, int, int);
    213 extern int bundle_WantAutoloadTimer(struct bundle *);
    214 extern void bundle_ChangedPID(struct bundle *);
    215 extern void bundle_Notify(struct bundle *, char);
    216 extern int bundle_Uptime(struct bundle *);
    217